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The filamentary structures and associated electromagnetic fields of a relativistic electron beam have been studied by three dimensional particle-in-cell (PIC) simulations in the context of Fast Ignition fusion. The simulations explicitly…

Plasma Physics · Physics 2009-11-13 Anupam Karmakar , Naveen Kumar , Oleg Polomarov , Gennady Shvets , Alexander Pukhov

We report the realization of a BEC of metastable helium-4 atoms (4He*) in an all optical potential. Up to 10^5 spin polarized 4He* atoms are condensed in an optical dipole trap formed from a single, focused, vertically propagating far…

Quantum Gases · Physics 2010-05-31 G. B. Partridge , J. -C. Jaskula , M. Bonneau , D. Boiron , C. I. Westbrook

The Electron-Ion Collider provides a groundbreaking opportunity to study heavy pentaquarks with unprecedented precision, leveraging its high collision energy and beam spin polarization capabilities. As a representative case, we analyze…

High Energy Physics - Phenomenology · Physics 2025-03-05 In Woo Park , Sungtae Cho , Yongsun Kim , Su Houng Lee

In the era of high precision CMB measurements, systematic effects are beginning to limit the ability to extract subtler cosmological information. The non-circularity of the experimental beam has become progressively important as CMB…

Astrophysics · Physics 2011-04-11 Tarun Souradeep , Sanjit Mitra , Anand Sengupta , Subharthi Ray , Rajib Saha

In $e^+e^-$ collisions, transverse beam polarization can be a useful tool in studying the properties of particles associated with new physics beyond the Standard Model(SM). However, unlike in the case of measurements associated with…

High Energy Physics - Phenomenology · Physics 2011-01-04 Thomas G. Rizzo

Space-charge effects play an important role in high intensity particle accelerators and were studied using a variety of macroparticle tracking models. In this paper, we propose a symplectic particle-in-cell (PIC) model and compare this…

Accelerator Physics · Physics 2018-06-13 Ji Qiang

A review of the present state of investigations of the pseudospin-electron model (PEM), which is used in the theory of strongly correlated electron systems, is given. The model is used to describe the systems with the locally anharmonic…

Strongly Correlated Electrons · Physics 2016-11-23 Ihor Stasyuk

We develop a theory to analyze the decoherence effect in a charged qubit array system with photon echo signals in the multiwave mixing configuration. We present how the decoherence suppression effect by the {\it bang-bang} control with the…

Quantum Physics · Physics 2009-11-10 M. Sasaki , A. Hasegawa , J. I. Hayase , Y. Mitsumori , F. Minami

We discuss the potential of a $0.5\hskip 2pt TeV$ linear collider to explore manifestations of extended (or alternative) electroweak models of current interest, through measurements of the reaction $e^+e^-\to W^+W^-$ with both initial and…

High Energy Physics - Phenomenology · Physics 2016-09-01 A. A. Babich , A. A. Pankov , N. Paver

$J/\Psi$ particles are abundantly produced at the Beijing Electron Positron Collider (BEPC). The $J/\Psi$ decays provide an excellent place for studying $N^*$ resonances. For $J/\Psi\to\bar NN\pi$ and $\bar NN\pi\pi$, the $\pi N$ and…

High Energy Physics - Phenomenology · Physics 2007-05-23 B. S. Zou , H. B. Li , representing BES Collaboration

Non-separable superpositions of polarization and spatial modes in Gaussian beams have shown rich patterns of spatially-variable polarization encoded in the transverse mode of the light, with the potential for many applications. In this work…

Optics · Physics 2020-01-08 Brianna M. Holmes , Enrique J. Galvez

Photoassociation (PA) of ultracold metastable helium to the 2s2p manifold is theoretically investigated using a non-perturbative close-coupled treatment in which the laser coupling is evaluated without assuming the dipole approximation. The…

Atomic Physics · Physics 2015-05-14 Daniel G. Cocks , Ian B. Whittingham

We extend the covariance-matrix description of atom--light quantum interfaces, originally developed for real and effective spin-1/2 atoms, to include "spin alignment" degrees of freedom. This allows accurate modeling of optically-probed…

We generalize the analysis of the normal modes for a rotating ionic Coulomb crystal in a Penning trap to allow for inhomogeneities in the system. Our formal developments are completely general, but we choose to examine a crystal of Be+ ions…

Quantum Physics · Physics 2014-11-18 M. McAneny , B. Yoshimura , J. K. Freericks

Resonant scattering of energetic protons off magnetic irregularities is the main process in cosmic ray diffusion. The typical theoretical description uses Alfven waves in the low frequency limit. We demonstrate that the usage of…

Solar and Stellar Astrophysics · Physics 2014-05-09 Cedric Schreiner , Felix Spanier

We perform a systematic investigation of the electronic properties of the $^2\Sigma^+$ ground state of Li-alkaline-earth dimers. These molecules are proposed as possible candidates for quantum simulation of lattice-spin models. We apply…

Quantum Physics · Physics 2015-05-30 Svetlana Kotochigova , Jacek Kłos , Alexander Petrov , Maria Linnik , Paul S. Julienne

In this paper, we present a theoretical simulation of 87Rb absorption spectrum in a thermal cm-cell which is adaptive to the experimental observation. In experiment, the coupling and probe beams are configured to copropagate but…

Atomic Physics · Physics 2017-03-09 Hong Cheng , Shan-Shan Zhang , Pei-Pei Xin , Yuan Cheng , Hong-Ping Liu

We report on experiments exploring the physics of dipolar quantum gases using a Chromium Bose-Einstein condensate (BEC). By means of a Feshbach resonance, it is possible to reduce the effects of short range interactions and reach a regime…

Other Condensed Matter · Physics 2017-08-23 T. Lahaye , J. Metz , T. Koch , B. Fröhlich , A. Griesmaier , T. Pfau

Determining the spin of new particles is critical in identifying the true theory among various extensions of the Standard Model at the next generation of colliders. Quantum interference between different helicity amplitudes was shown to be…

High Energy Physics - Phenomenology · Physics 2009-02-18 Matthew R. Buckley , Seong Youl Choi , Kentarou Mawatari , Hitoshi Murayama

Critical phenomena involve a structural change in the correlations of its constituents. These features can be employed in quantum simulators to assess when a criticality occurred in medium-size systems, for which phase transitions are not…

Quantum Physics · Physics 2014-11-27 Adeline Orieux , Joelle Boutari , Marco Barbieri , Mauro Paternostro , Paolo Mataloni
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